/* SPDX-License-Identifier: GPL-2.0-or-later */
/******************************************************************************
 *
 *      (C)Copyright 1998,1999 SysKonnect,
 *      a business unit of Schneider & Koch & Co. Datensysteme GmbH.
 *
 *      The information in this file is provided "AS IS" without warranty.
 *
 ******************************************************************************/

#ifndef _FDDI_
#define _FDDI_

struct fddi_addr {
        u_char  a[6] ;
} ;

#define GROUP_ADDR      0x80            /* MSB in a[0] */

struct fddi_mac {
        struct fddi_addr        mac_dest ;
        struct fddi_addr        mac_source ;
        u_char                  mac_info[4478] ;
} ;

#define FDDI_MAC_SIZE   (12)
#define FDDI_RAW_MTU    (4500-5)        /* exl. Pr,SD, ED/FS */
#define FDDI_RAW        (4500)

/*
 * FC values
 */
#define FC_VOID         0x40            /* void frame */
#define FC_TOKEN        0x80            /* token */
#define FC_RES_TOKEN    0xc0            /* restricted token */
#define FC_SMT_INFO     0x41            /* SMT Info frame */
/*
 * FC_SMT_LAN_LOC && FC_SMT_LOC are SK specific !
 */
#define FC_SMT_LAN_LOC  0x42            /* local SMT Info frame */
#define FC_SMT_LOC      0x43            /* local SMT Info frame */
#define FC_SMT_NSA      0x4f            /* SMT NSA frame */
#define FC_MAC          0xc0            /* MAC frame */
#define FC_BEACON       0xc2            /* MAC beacon frame */
#define FC_CLAIM        0xc3            /* MAC claim frame */
#define FC_SYNC_LLC     0xd0            /* sync. LLC frame */
#define FC_ASYNC_LLC    0x50            /* async. LLC frame */
#define FC_SYNC_BIT     0x80            /* sync. bit in FC */

#define FC_LLC_PRIOR    0x07            /* priority bits */

#define BEACON_INFO     0               /* beacon type */
#define DBEACON_INFO    1               /* beacon type DIRECTED */


/*
 * indicator bits
 */
#define C_INDICATOR     (1<<0)
#define A_INDICATOR     (1<<1)
#define E_INDICATOR     (1<<2)
#define I_INDICATOR     (1<<6)          /* SK specific */ 
#define L_INDICATOR     (1<<7)          /* SK specific */

#endif  /* _FDDI_ */